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Java Source Code / Java Documentation » Database DBMS » Quadcap Embeddable Database » com.quadcap.sql 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


com.quadcap.sql.LogStep
   com.quadcap.sql.UpdateRow

UpdateRow
public class UpdateRow extends LogStep implements Externalizable(Code)
Log step to update one or more values in a table row.
author:
   Stan Bailes


Field Summary
static  Externextern
    
 RowmemRow
    
 RowoldRow
    
 byte[]oldRowBytes
    
 byte[]rowBytes
    
 longrowId
    
transient  Tabletable
    
 StringtableName
    

Constructor Summary
public  UpdateRow()
    
public  UpdateRow(Session session, Table table, long rowId, Row row)
    
public  UpdateRow(Session session, long rowId, Row orow, Row nrow)
     Construct update where both old and new rows are already prepared.
public  UpdateRow(Session session, Table table, long rowId, byte[] oldRowBytes, byte[] rowBytes)
    

Method Summary
final  byte[]copy(byte[] b)
    
public  ExterngetExtern()
    
final  LazyRowgetRow(Datafile db)
    
 TablegetTable(Database db)
    
public  voidinit(Session session, Table table, long rowId, Row row)
    
public  voidinitx(Table table, long rowId, byte[] oldRowBytes, byte[] rowBytes)
    
public  voidprepare(Session session)
     Get ready...
public  voidreadExternal(ObjectInput in)
    
public  voidredo(Session session)
    
public  voidsetExtern(Extern extern)
    
public  StringtoString()
    
public  voidundo(Session session)
    
public  voidwriteExternal(ObjectOutput out)
    

Field Detail
extern
static Extern extern(Code)
My class's Extern object



memRow
Row memRow(Code)



oldRow
Row oldRow(Code)



oldRowBytes
byte[] oldRowBytes(Code)



rowBytes
byte[] rowBytes(Code)



rowId
long rowId(Code)



table
transient Table table(Code)



tableName
String tableName(Code)




Constructor Detail
UpdateRow
public UpdateRow()(Code)
Default Constructor



UpdateRow
public UpdateRow(Session session, Table table, long rowId, Row row) throws IOException, SQLException(Code)
Construct update for specified table row



UpdateRow
public UpdateRow(Session session, long rowId, Row orow, Row nrow) throws IOException, SQLException(Code)
Construct update where both old and new rows are already prepared.



UpdateRow
public UpdateRow(Session session, Table table, long rowId, byte[] oldRowBytes, byte[] rowBytes) throws IOException, SQLException(Code)
Construct update for specified table row




Method Detail
copy
final byte[] copy(byte[] b)(Code)



getExtern
public Extern getExtern()(Code)



getRow
final LazyRow getRow(Datafile db) throws IOException, SQLException(Code)
Instantiate the row from the serialized byte array (if necessary)



getTable
Table getTable(Database db) throws IOException(Code)
Lazy table accessor



init
public void init(Session session, Table table, long rowId, Row row) throws IOException, SQLException(Code)
Explicit init/reinit



initx
public void initx(Table table, long rowId, byte[] oldRowBytes, byte[] rowBytes)(Code)
Special re=init for add/drop column



prepare
public void prepare(Session session) throws SQLException, IOException(Code)
Get ready...



readExternal
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException(Code)
Read me from a stream



redo
public void redo(Session session) throws IOException, SQLException(Code)
LogStep.redo(): blob accounting if necessary, then update the row in the database



setExtern
public void setExtern(Extern extern)(Code)



toString
public String toString()(Code)
Return a string representation for debugging



undo
public void undo(Session session) throws IOException, SQLException(Code)
LogStep.do(): blob accounting if necessary, then restore the old row in the database



writeExternal
public void writeExternal(ObjectOutput out) throws IOException(Code)
Write me to a stream



Fields inherited from com.quadcap.sql.LogStep
Session mySession(Code)(Java Doc)

Methods inherited from com.quadcap.sql.LogStep
public void prepare(Session session) throws IOException, SQLException(Code)(Java Doc)
public void redo(Transaction t, Datafile df) throws IOException, DatafileException(Code)(Java Doc)
abstract public void redo(Session session) throws IOException, SQLException(Code)(Java Doc)
public void undo(Transaction t, Datafile df) throws IOException, DatafileException(Code)(Java Doc)
abstract public void undo(Session session) throws IOException, SQLException(Code)(Java Doc)

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